Table of Contents
pgmtolispm - convert a portable graymap into Lisp Machine format
pgmtolispm
[pgmfile]
Reads a portable graymap as input. Produces a Lisp
Machine bitmap as output.
This is the file format read by the tv:read-bit-array-file
function on TI Explorer and Symbolics lisp machines.
Given a pgm (instead
of a pbm) a multi-plane image will be output. This is probably not useful
unless you have a color lisp machine.
Multi-plane bitmaps on lisp machines
are color; but the lispm image file format does not include a color map,
so we must treat it as a graymap instead. This is unfortunate.
lispmtopgm(1)
,
pgm(5)
Output width is always rounded up to the nearest multiple of
32; this might not always be what you want, but it probably is (arrays
which are not modulo 32 cannot be passed to the Lispm BITBLT function,
and thus cannot easily be displayed on the screen).
No color.
Copyright
(C) 1991 by Jamie Zawinski and Jef Poskanzer.
Table of Contents